Mariana van Zeller investigates black-market plastic surgery.

The villains behind an exploding online romance scam.

Mariana explores California's booming weed black market.

Outlaw motorcycle gangs known as 1% clubs.

Mariana follows a meth pipeline from Mexican cartels.

Mariana exposes a racist underground movement bent on a violent future.

Mariana tracks a smuggling route of stolen cars from the U.S. to West Africa.

Mariana investigates a new breed of cocaine trafficker: lady bosses.

Mariana travels to the Amazon to track down the criminal networks behind a slew of killings and the illegal destruction of the rainforest.

As much as 30% of our seafood has been caught illegally. Mariana searches for the fish pirates who make billions each year while destroying our oceans.